[class^="zgn-"],
[class*=" zgn-"] {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-size: 16px;
    font-family: Avenir, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #2c3e50;
}